Pump.



PATBNTED DEC. 11, 1906,

.B. P. woman.

.m: mamas Pnzns co., WAsnxNcToN. n. c,

APPLIOATI-ON FILED JULY 14, 1904,

UNITED STATES PATENT OFFICE.

EUCLID P. VVORDEN, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO FRED M.

PRESCOTT STEAM PUMP COMPANY, OF WEST ALLIS, WISCONSIN, A

CORPORATION OF WISCONSIN.

PUMP.

Specification of Letters Patent.

Application filed ly 14, 1904:. Serial No. Z16A58.

To all whom it may concern.-

Be it known that I, EUCLID P. WORDEN, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Pumps, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

This invention relates particularly to pumps in which the suction and discharge valves are carried by decks or plates cast integral with and on opposite sides of the cylinders or pulsation-chambers and the suctionvalve area is greater than the dischargevalve area. Its main object is to facilitate boring the valve-openings in said plates without enlarging the discharge-chamber or making unnecessary joints in the castings.

It consists in certain novel features of construction and in the peculiar arrange ment and combinations of parts, as hereinafter particularly described.

In the accompanying drawings like letters designate the same parts in both figures. Figure 1 is a longitudinal section on the line 1 1, Fig. 2, through one side of a duplex pump embodying my invention; and Fig. 2 is an end elevation and vertical cross-section, on the line 2 2, Fig. 1, of the same.

For the purpose of illustration the invention is shown as embodied in a duplex pump in which the two plunger or pulsation chambers are arranged horizontally side by side and the discharge and suction chambers above and below them; but it is applicable to single pumps and pumps of other kinds.

Referring to the drawings, a a designate the pulsation or plunger chambers, which are each divided by partitions 5 into two parts.

a designates one of the plungers fitted to work in a sleeve or bushing in the partition I).

d is the suction-chamber, which is cast integral with the plunger or pulsation chambers a, and e is the discharge-chamber, which is separately cast and detachably secured to said chambers by a flange and bolts or other means.

The suction-main is connected at f with the suction-chamber and the discharge-main at g with the discharge-chamber.

The suction and discharge valve decks or plates h and "L are cast integral with the plungerchan1bers below and above the same. A part of the suction-valve plate h is formed in a plane parallel with the plane of the discharge-valve plate 11 and has a number of valve-openings directly in line with and h, and in order that these additional openings may be readily bored and threaded they are formed in a plane at an angle to the other openings, but perpendicular to lines passing obliquely through the nearest or other convenient openings 7c in the upper plate, so that boring and screw-cutting tools may be inserted obliquely through the openings in the upper plate, as indicated by dotted lines on Fi 2, and the openings in the inclined or oblique part of the lower valve'plate may be bored and threaded from above, the discharge-chamber casting being removed when these operations are performed.

The valve-openings being preferably bored and threaded with more or less taper to insure a tight fit therein of the valve seats and guides, the boring and threading operations can be performed much more conveniently and satisfactorily from the upper or larger ends of the openings, and in this way the suction-chamber may be made integral with the suction-Valve plate and pulsation-chambers.

By making the extra valve-openings in the plate h in a plane perpendicular to lines passing obliquely through openings in the upper plate 2' the openings j can be bored and threaded as readily and accurately as the openings 7', which are directly opposite and in line with the openings 7c, and the dischargevalve plate 01 can be cast integral with the pulsation chambers without unnecessarily increasing the size of the discharge-chamber e.

In the pump as herein shown there are three longitudinal rows of suction and dis charge valve openings j and 7c arranged direotly opposite and in line with each other in parallel planes on each side of the pump, and there is an extra row of suction-valve openings 9" formed in a plane inclined or oblique to the plane of the other openings and perpendicular to lines passing centrally and obliquely through the outer row of openings k in the upper plate; but the number and arrangement of the valve-openingsmay be varied, as well as other details of construction, without departing from the invention.

After the openings have been bored and threaded, as above explained, valve seats and guides Z are screwed into them, and they are provided with valves m of the usual or sides of a pulsation-chamber, the suctionvalve plate having a greater number of valveopenings than the discharge-valve plate and being formed in planes which are at an angle to each other and one or more of which are perpendicular to straight lines passing obliquely through openings in the dischargevalve plate, substantially as described.

I 3. A pump having suction and discharge valve plates integral with and on opposite sides of a pulsation-chamber, a suction-chamber also integral with said ulsation-chamber and valve-plates, and a discharge-chamber detachably secured to said pulsationchamber, the suction-valve plate having a greater number of valve-openings than the discharge-valve plate and being formed in planes which are at an angle to each other and one or more of which are perpendicular to straight lines passing obliquely through openings in the discharge-valve plate, substantially as described.

4. A pump having suction and discharge valve plates on opposite sides of a pulsationchamber, the suction-valve plate having a greater number of valve-openings than the discharge-valve plate and having some of its openings in a plane parallel with the plane of the discharge-valve plate and directly opposite and in line with openings therein and other openings in a plane oblique to the plane of the discharge-valve plate and perpendicular to straight lines passing obliquely through openings therein, substantially as described.

In Witness whereof I hereto affix my signature in presence of two Witnesses.

EUCLID P. WORDEN. Witnesses:

CHAs. L. Goss, BERNARD O. ROLOFF. 

